Method updatePenStyles

src/frontend/GuiTools.cpp:56–80

! fills the ComboBox \c combobox with the six possible Qt::PenStyles, the color \c color is used. */

	fills the ComboBox \c combobox with the six possible Qt::PenStyles, the color \c color is used.
*/
void GuiTools::updatePenStyles(QComboBox* comboBox, const QColor& color) {
	int index = comboBox->currentIndex();
	comboBox->clear();

	QPainter pa;
	int offset = 2;
	int w = 50;
	int h = 10;
	QPixmap pm(w, h);
	comboBox->setIconSize(QSize(w, h));

	// loop over six possible Qt-PenStyles, draw on the pixmap and insert it
	// TODO: avoid copy-paste in all finctions!
	static std::array<QString, 6> list =
		{i18n("No Line"), i18n("Solid Line"), i18n("Dash Line"), i18n("Dot Line"), i18n("Dash-dot Line"), i18n("Dash-dot-dot Line")};
	for (int i = 0; i < 6; i++) {
		pm.fill(Qt::transparent);
		pa.begin(&pm);
		pa.setPen(QPen(color, 1, (Qt::PenStyle)i));
		pa.drawLine(offset, h / 2, w - offset, h / 2);
		pa.end();
		comboBox->addItem(QIcon(pm), list[i]);
	}
	comboBox->setCurrentIndex(index);
}

/*!
	fills the QMenu \c menu with the six possible Qt::PenStyles, the color \c color is used.